package com.redwood.report.util;

import java.util.Calendar;

/**
 * Created by supeng on 2017/1/12 0012.
 */

public class SpecialCalendar {
    private int daysOfMonth = 0;      //某月的天数
    private int dayOfWeek = 0;        //具体某一天是星期几

    // 判断是否为闰年
    public boolean isLeapYear(int year) {
        if (year % 100 == 0 && year % 400 == 0) {
            return true;
        } else if (year % 100 != 0 && year % 4 == 0) {
            return true;
        }
        return false;
    }

    //得到某月有多少天数
    public int getDaysOfMonth(boolean isLeapyear, int month) {
        switch (month) {
            case 1:
            case 3:
            case 5:
            case 7:
            case 8:
            case 10:
            case 12:
                daysOfMonth = 31;
                break;
            case 4:
            case 6:
            case 9:
            case 11:
                daysOfMonth = 30;
                break;
            case 2:
                if (isLeapyear) {
                    daysOfMonth = 29;
                } else {
                    daysOfMonth = 28;
                }
        }
        return daysOfMonth;
    }

    //指定某年中的某月的第一天是星期几
    public int getWeekdayOfMonth(int year, int month){
        Calendar cal = Calendar.getInstance();
        cal.set(year, month-1, 1);
        dayOfWeek = cal.get(Calendar.DAY_OF_WEEK)-1;
        return dayOfWeek;
    }
}
